Despite the Waltish title and schoolboyish cover, this is a valuable book for anyone thinking of improving their fitness with a military aim in mind. It starts with general fitness and exercise routines you can do at home and outside for no (or barely any) cost and then builds up from there, all the way to truly expert level. It even covers diet in detail, an area which almost all exercise and fitness books aimed primarily at men do not cover well. And being aimed mainly at men, it (sensibly, rather than sexistly) presumes zero knowledge in this area: it provides a two weekly shopping lists from each of which you can make a week's worth of healthy food. Some of the reviews here say that this book tells you no more than what you might already know from armed forces PT training. Yeah, well, maybe. For those already in the forces, I think it does a good job of setting out a training plan of gradually increasing toughness. Plus it keeps reiterating the "no magic answer" point: you've simply got to put the time in. It's also a handy reference book. But, crucially, it is an excellent starting point for those OUTSIDE the forces (and so without access to expert PT advice) but who are thinking of joining. A sports nutritionist in my family has questioned the credentials of Mr Weale and his collaborators to give the nutritional advice in the book - but have agreed that all of the dietary advice is sound. So I'd especially recommend this to anyone considering joining the forces (particularly the reserves, as they are to a much greater degree personally responsible for ensuring that they meet the military fitness standards), provided they keep away from trying out the pre-SAS, Commando and Para selection stuff too early. But for anyone needing to ensure they are MILITARILY fit, this book is definitely worth the price.